Preprint: MU B.1.621 the most resistant variant to convalescent and vaccinated sera to date

Here, we demonstrate that the Mu variant is highly resistant to sera from COVID-19 convalescents and BNT162b2-vaccinated individuals. Direct comparison of different SARS-CoV-2 spike proteins revealed that Mu spike is more resistant to serum-mediated neutralization than all other currently recognized variants of interest (VOI) and concern (VOC)....More...

Preprint: Characterization of the emerging B.1.621 variant of interest of SARS-CoV-2

In this study, we reported the emergence and spread of the novel B.1.621 lineage of SARS-CoV-2, a new VOI with the insertion 146N and several amino acid substitutions in the Spike protein (T95I,Y144T, Y145S, R346K, E484K, N501Y and P681H)....More...

Belgium: 7 fully vaccinated care home residents die after contracting B.1.621 Mu variant first found in Colombia

During the past two weeks, 7 residents of a care home near Zaventem in Belgium have died after having contracted the B.1.621 variant of coronavirus first identified in Colombia, South America....More...

Preprint: The emergence of Sars-CoV-2 coronavirus variant Lambda C.37 in South America

We report the emergence of a novel lineage of SARS-CoV-2 in South America, termed C.37. It presents seven nonsynonymous mutations in the Spike gene (Δ247-253, G75V, T76I, L452Q, F490S, T859N) and a deletion in the ORF1a gene (Δ3675-3677) also found in variants of concern (VOCs) Alpha, Beta, and Gamma....More...

Countries with increasing #coronavirus rates as of mid June 2021

There are still a large number of countries across the globe where Sars-CoV-2 is increasing as of June 16th 2021 – Great Britain, Colombia, Mongolia, Kuwait, Brazil, South Africa, Russia, Oman, Panama, Tunisia, and Afghanistan have all seen recent surges. ...More...

Colombia: novel highly divergent #coronavirus SARS-CoV-2 lineage with the Spike substitutions L249S and E484K, assigned to the B.1.111 lineage

Here we report a novel and highly divergent lineage with 21 characteristic mutations, including 10 non-synonymous, 8 synonymous and 3 mutations in non-coding regions (5’and 3’ UTR and intergenic region)....More...